(19)

(11)

EP 3 935 126 A1

(12)

(43) Date of publication: 12.01.2022 Bulletin 2022/02 (21) Application number: 20716292.6 (22) Date of filing: 06.03.2020

(51) International Patent Classification (IPC):  C09K 5/04(2006.01) F25B 43/00(2006.01) F25B 45/00(2006.01) (52) Cooperative Patent Classification (CPC): C09K 2205/126; F25B 45/00; F25B 2345/002; C09K 5/045 (86) International application number: PCT/US2020/021387 (87) International publication number: WO 2020/185558 (17.09.2020 Gazette 2020/38)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 08.03.2019 US 201962815490 P 23.12.2019 US 201962952667 P (71) Applicant: The Chemours Company FC, LLC Wilmington, Delaware 19801 (US)

(72) Inventors: KOBAN, Mary E. Chadds Ford, Pennsylvania 19317 (US) HUGHES, Joshua Wilmington, Delaware 19810 (US) KRAUSE, Karl Robert Kennett Square, Pennsylvania 19348 (US) MINOR, Barbara Haviland The Villages, FL 32163 (US) PENG, Sheng Hockessin, Delaware 19707 (US) SHARMA, Pradeep Wilmington, Delaware 19810 (US) SUN-BLANKS, Jian Earleville, Maryland 21909 (US) WESTDIJK, Hans 3263 EC Oud Beijerland (NL) (74) Representative: Heinemann, Monica et al Abitz & Partner Patentanwälte mbB Arabellastraße 17 81925 München 81925 München (DE)